diff --git a/packages/block-library/src/paragraph/block.json b/packages/block-library/src/paragraph/block.json
index 497a6b2c29a66..e796f22f492fe 100644
--- a/packages/block-library/src/paragraph/block.json
+++ b/packages/block-library/src/paragraph/block.json
@@ -1,6 +1,7 @@
 {
 	"$schema": "https://schemas.wp.org/trunk/block.json",
 	"apiVersion": 2,
+	"temporarilyDisableIframe": "I understand that this flag will only work for two releases (6.2 and 6.3) and that the block must be updated to avoid breakage in WP 6.4.",
 	"name": "core/paragraph",
 	"title": "Paragraph",
 	"category": "text",
diff --git a/packages/edit-post/src/components/visual-editor/index.js b/packages/edit-post/src/components/visual-editor/index.js
index 21760ccfb40dd..449f4c24c3a3b 100644
--- a/packages/edit-post/src/components/visual-editor/index.js
+++ b/packages/edit-post/src/components/visual-editor/index.js
@@ -36,7 +36,7 @@ import { useSelect, useDispatch } from '@wordpress/data';
 import { useMergeRefs } from '@wordpress/compose';
 import { arrowLeft } from '@wordpress/icons';
 import { __ } from '@wordpress/i18n';
-import { parse } from '@wordpress/blocks';
+import { parse, store as blocksStore } from '@wordpress/blocks';
 import { store as coreStore } from '@wordpress/core-data';
 
 /**
@@ -155,6 +155,17 @@ export default function VisualEditor( { styles } ) {
 		( select ) => select( editPostStore ).hasMetaBoxes(),
 		[]
 	);
+	const hasIframeIncompatibleBlocks = useSelect(
+		( select ) =>
+			select( blocksStore )
+				.getBlockTypes()
+				.some(
+					( { temporarilyDisableIframe } ) =>
+						temporarilyDisableIframe ===
+						'I understand that this flag will only work for two releases (6.2 and 6.3) and that the block must be updated to avoid breakage in WP 6.4.'
+				),
+		[]
+	);
 	const { themeHasDisabledLayoutStyles, themeSupportsLayout, isFocusMode } =
 		useSelect( ( select ) => {
 			const _settings = select( blockEditorStore ).getSettings();
@@ -339,7 +350,9 @@ export default function VisualEditor( { styles } ) {
 				>
 					<MaybeIframe
 						shouldIframe={
-							( isBlockBasedTheme && ! hasMetaBoxes ) ||
+							( isBlockBasedTheme &&
+								! hasMetaBoxes &&
+								! hasIframeIncompatibleBlocks ) ||
 							isTemplateMode ||
 							deviceType === 'Tablet' ||
 							deviceType === 'Mobile'
diff --git a/schemas/json/block.json b/schemas/json/block.json
index 9e7d43470b180..44e5ec6f09584 100644
--- a/schemas/json/block.json
+++ b/schemas/json/block.json
@@ -21,6 +21,13 @@
 			"default": 1,
 			"enum": [ 1, 2 ]
 		},
+		"temporarilyDisableIframe": {
+			"type": "string",
+			"description": "This property is used to temporarily disable the iframe.",
+			"enum": [
+				"I understand that this flag will only work for two releases (6.2 and 6.3) and that the block must be updated to avoid breakage in WP 6.4."
+			]
+		},
 		"name": {
 			"type": "string",
 			"pattern": "^[a-z][a-z0-9-]*/[a-z][a-z0-9-]*$",